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Optical analog of spontaneous symmetry breaking induced by tachyon condensation in amplifying plasmonic arrays

Marini, A. and Tran, T.X. and Roy, S. and Longhi, S. and Biancalana, F. (2014) Optical analog of spontaneous symmetry breaking induced by tachyon condensation in amplifying plasmonic arrays. Physical Review A - Atomic, Molecular, and Optical Physics, 89 (2): 23840. ISSN 10502947

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Abstract

We study analytically and numerically an optical analog of tachyon condensation in amplifying plasmonic arrays. Optical propagation is modeled through coupled-mode equations, which in the continuous limit can be converted into a nonlinear one-dimensional Dirac-like equation for fermionic particles with imaginary mass, i.e., fermionic tachyons. We demonstrate that the vacuum state is unstable and acquires an expectation value with broken chiral symmetry, corresponding to the homogeneous nonlinear stationary solution of the system. The quantum field theory analog of this process is the condensation of unstable fermionic tachyons into massive particles. This paves the way for using amplifying plasmonic arrays as a classical laboratory for spontaneous symmetry breaking effects in quantum field theory. © 2014 American Physical Society.

Item Type: Article
Divisions: Faculties > Faculty of Physical and Chemical Engineering
Identification Number: 10.1103/PhysRevA.89.023840
Uncontrolled Keywords: Chiral symmetry; Coupled mode equation; Expectation values; Massive particles; Plasmonic arrays; Quantum field theory; Spontaneous symmetry breaking; Stationary solutions; Condensation; Nonlinear equations; Plasmons; Quantum theory; Control equipment
Additional Information: Language of original document: English. All Open Access, Green.
URI: http://eprints.lqdtu.edu.vn/id/eprint/9994

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